Changeset d03ade7 in mainline for uspace/drv/uhci/transfer_list.c

Timestamp:

2011-01-25T21:25:39Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

9ee87f6

Parents:

b00163f

Message:

Enqueue transfers

Fix malloc check in uhci_add_transfer()

File:

• uspace/drv/uhci/transfer_list.c (modified) (1 diff)

uspace/drv/uhci/transfer_list.c

@@ -23 +23 @@
   transfer_list_t *instance, transfer_descriptor_t *transfer)
 {
+        assert(instance);
+        assert(transfer);
+
+        uint32_t pa = (uintptr_t)addr_to_phys(transfer);
+        assert((pa & LINK_POINTER_ADDRESS_MASK) == pa);
+
+        /* empty list */
+        if (instance->first == NULL) {
+                assert(instance->last == NULL);
+                instance->first = instance->last = transfer;
+        } else {
+                assert(instance->last);
+                instance->last->next_va = transfer;
+
+                assert(instance->last->next & LINK_POINTER_TERMINATE_FLAG);
+                instance->last->next = (pa & LINK_POINTER_ADDRESS_MASK);
+                instance->last = transfer;
+        }
+
+        assert(instance->queue_head);
+        if (instance->queue_head->element & LINK_POINTER_TERMINATE_FLAG) {
+                instance->queue_head->element = (pa & LINK_POINTER_ADDRESS_MASK);
+        }
+        uhci_print_info("Successfully added transfer to the hc queue.\n");
         return EOK;
 }